Fabrication of capping-free Pt/porous RGO hybrids by a repeatable-using reduction material and their application in methanol electrooxidation

•Capping-free Pt/porous RGO are prepared with a repeatable-using reducer.•Pt/RGO shows excellent poisoning tolerance and long term stability.•High reaction temperature will deteriorate the catalyst performance. The uncapped Pt/reduced graphene oxide (RGO) composites are synthesized through reducing...

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Bibliographic Details
Published in:Chemical physics letters 2015-01, Vol.620, p.73-77
Main Authors: Li, Tao, Xue, Ren-Jie, Xue, Qiong, Yang, Zhi-Yong, Yan, Dong-Wei, Gu, Zhan-Jun
Format: Article
Language:English
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Summary:•Capping-free Pt/porous RGO are prepared with a repeatable-using reducer.•Pt/RGO shows excellent poisoning tolerance and long term stability.•High reaction temperature will deteriorate the catalyst performance. The uncapped Pt/reduced graphene oxide (RGO) composites are synthesized through reducing GO and Pt precursor simultaneously in acidic solution by Zn foil at room temperature. The Zn foils act as reducer and can be repeatable used for many cycles. RGO sheets arrange into porous structure with uniform Pt particles dispersing on it. The acquired catalyst shows excellent poisoning tolerance and long term stability while keeping the mass activity as roughly same level of the commercial Pt/C. However, additional experiments on high temperature products imply that arising reaction temperature may cause the deteriorating of catalyst performance.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2014.12.035